Version 4
SHEET 1 3092 1108
WIRE -304 -288 -432 -288
WIRE -432 -256 -432 -288
WIRE -304 -240 -304 -288
WIRE -1024 -176 -1296 -176
WIRE -864 -176 -1024 -176
WIRE -512 -176 -864 -176
WIRE -1296 -144 -1296 -176
WIRE -432 -144 -432 -176
WIRE -432 -144 -576 -144
WIRE -432 -128 -432 -144
WIRE -752 -96 -1200 -96
WIRE -624 -96 -672 -96
WIRE -1024 -64 -1024 -176
WIRE -1296 -48 -1296 -64
WIRE -800 -48 -928 -48
WIRE -512 -16 -512 -176
WIRE -864 0 -864 -176
WIRE -576 0 -576 -144
WIRE -544 0 -576 0
WIRE -928 16 -928 -48
WIRE -896 16 -928 16
WIRE -432 16 -432 -48
WIRE -432 16 -480 16
WIRE -800 32 -800 -48
WIRE -800 32 -832 32
WIRE -752 32 -800 32
WIRE -624 32 -624 -96
WIRE -624 32 -672 32
WIRE -544 32 -624 32
WIRE -1200 48 -1200 -96
WIRE -1024 48 -1024 16
WIRE -896 48 -1024 48
WIRE -1024 64 -1024 48
WIRE -1200 160 -1200 128
WIRE -1024 160 -1024 144
WIRE -864 208 -864 64
WIRE -512 208 -512 48
WIRE -512 208 -864 208
WIRE -864 224 -864 208
WIRE -864 336 -864 304
FLAG -1024 160 0
FLAG -304 -240 0
FLAG -1200 160 0
FLAG -864 336 0
FLAG -1296 -48 0
SYMBOL Misc\\EuropeanResistor -1008 -80 M0
SYMATTR InstName R1
SYMATTR Value 900k
SYMBOL Misc\\EuropeanResistor -1008 48 M0
SYMATTR InstName R3
SYMATTR Value 100k
SYMBOL Misc\\EuropeanResistor -656 48 M270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 100.0k
SYMBOL Misc\\EuropeanResistor -656 -80 M270
WINDOW 0 27 56 VTop 2
WINDOW 3 1 60 VBottom 2
SYMATTR InstName R19
SYMATTR Value 100.0k
SYMBOL Misc\\EuropeanResistor -448 -160 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R20
SYMATTR Value 100.0k
SYMBOL Misc\\EuropeanResistor -448 -32 M180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R25
SYMATTR Value 100.0k
SYMBOL voltage -1200 32 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 0 -157 110 Left 2
WINDOW 3 -161 84 Left 2
SYMATTR InstName SIGNAL
SYMATTR Value SINE(0 1 10k)
SYMBOL voltage -864 208 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 0 -48 23 Left 2
WINDOW 3 -57 -3 Left 2
SYMATTR InstName -SUPPLY
SYMATTR Value -15
SYMBOL voltage -1296 -160 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 0 -48 23 Left 2
WINDOW 3 -50 -2 Left 2
SYMATTR InstName +SUPPLY
SYMATTR Value 15
SYMBOL Opamps\\OP27 -864 -32 R0
SYMATTR InstName U1
SYMBOL Opamps\\OP27 -512 -48 R0
SYMATTR InstName U2
TEXT -1362 360 Left 2 !.tran 0.01